【发布时间】:2019-07-20 20:09:51
【问题描述】:
如何在不声明每个列名的情况下回显查询结果中的所有行(作为 JSON)?即不写'location_id' => $row['location_id'] 等等,就像我在下面所做的那样。
<?php
require_once("./config.php"); //database configuration file
require_once("./database.php");//database class file
$location_id = isset($_GET["location_id"]) ? $_GET["location_id"] : '';
$db = new Database();
if (isset($_GET["location_id"])){
$sql = "SELECT * FROM location WHERE location_id = $location_id";
} else {
$sql = "SELECT * FROM location";
}
$results = $db->conn->query($sql);
if($results->num_rows > 0){
$data = array();
while($row = $results->fetch_assoc()) {
$data[] = array(
'location_id' => $row['location_id'],
'customer_id' => $row['customer_id'],
'location_id' => $row['location_id'],
'location_name' => $row['location_name'],
'payment_interval' => $row['payment_interval'],
'location_length' => $row['location_length'],
'location_start_date' => $row['location_start_date'],
'location_end_date' => $row['location_end_date'],
'location_status' => $row['location_status'],
'sign_sides' => $row['sign_sides'],
'variable_annual_price' => $row['variable_annual_price'],
'fixed_annual_price' => $row['fixed_annual_price'],
'location_file' => $row['location_file']);
}
header("Content-Type: application/json; charset=UTF-8");
echo json_encode(array('success' => 1, 'result' => $data));
} else {
echo "Records not found.";
}
?>
更新代码。现在使用@Dharman 推荐的参数化预处理语句(谢谢!)。我在第 17 行得到Parse error: syntax error, unexpected '->' (T_OBJECT_OPERATOR)。我正在运行 PHP 7.3 版。怎么了?我应该如何回显 $data 使其像以前一样是 JSON 对象?
<?php
header("Content-Type: application/json; charset=UTF-8");
//include required files in the script
require_once("./config.php"); //database configuration file
require_once("./database.php");//database class file
$object_contract_id = isset($_POST["object_contract_id"]) ? $_POST["object_contract_id"] : '';
//create the database connection
$db = new Database();
if (isset($_POST["object_contract_id"])){
$sql = "SELECT * FROM object_contract WHERE object_contract_id = ?";
$stmt = mysqli->prepare($sql);
$stmt->bind_param("s", $_POST['object_contract_id']);
} else {
$sql = "SELECT * FROM object_contract";
$stmt = mysqli->prepare($sql);
}
$stmt->execute();
$data = $stmt->get_result()->fetch_all();
?>
【问题讨论】:
-
如果我理解正确的话。你可以关注
$date[] = $row。如需更多说明,请查看fetch_assoc() 的文档。 -fetch_assoc()获取结果行作为关联数组。 -
@GentleSama 谢谢!你是说$data(你写了$date)吗?
-
哦,是的,当然是 $data。
-
@Dharman 非常感谢!即使是 SELECT 语句也需要这样做吗?如果是这样,在这种情况下我将如何重写我的代码?我只能找到 INSERT 语句的示例。
-
非常感谢您的帮助。您知道有关如何设置 CRUD 的教程的任何好的资源吗?我的问题中的代码是用于获取“位置”。我还有 6 种其他类型的数据需要处理。我想我没有/不需要创建 24 个不同的 php 文件(每种类型的数据和操作一个)?